Transmission-band.



T. L. WHITE.

TRANSMISSION BAND- APPLICATION FILED DEC. 5. 1914.

Patented Sept. 12, 1916.

/4 be o 25 O c THOMAS LOCKE WHITE, OF IDAHO CITY, IDAHO.

TRANSMISSION-BAND.

Specification of Letters Patent.

Patented Sept. T2, T916,

Application filed December 5, 1914.. Serial No. 875,643.

To all whom it may concern:

Be it known that I, THOMAS Loom: WHITE, a citizen of the United States, residing at Idaho City, in the county of Boise and State of Idaho, have invented certain new and useful Improvements in Transmission-Bands, of which the following is a specification. I

My invention relates to transmission bands for automobiles, and particularly to that type used on Ford automobiles.

It is well known that the transmission of a Ford automobile comprises three rotating drums: one for the low speed, one for the reverse, and one for the. brake. Each of these drums is partially encircled by a band of resilient steel, lined with asbestos or a similar material, and provided at its ends with stationary ears. These drums, bands, and their associated parts to be described are inclosed by a cover provided with a small opening in its top closed by a hand plate. The ears at the left of the bands on the brake and reverse drums bear against bosses on the inner. wall of the transmission coverand hold the left ends stationary while the ends carrying the right ears are movable. These pairs of ears are slotted for the reception of rods which pass through these bosses and through other bosses formed on the outer wall of the cover. A spring is disposed around each of these rods between the ears, and the right ears are held in place by nuts threaded upon the rods and engaging washers contacting, with the right ears. In order to reverse the automobile or to apply the brake, it is necessary that these right ears be moved to the left to cause the bands to *grip the drums. This is accomplished by means of foot pedals secured upon the outer ends of the rods, the outer faces of the outer bosses and the'inner faces of the bosses on the pedals having cam faces whereby forward movement of either pedal will cause the correspondin rod to be moved to the left, with the result t at the band will grip the drum. The right ear ofthe band encircling the middle or low speed drum is held stationary against an adjustable member extending through a boss on the inside and on the outside of the right hand side of the transmission cover, while the free left ear is engaged by a member secured on the inner end of a rod passing through a boss on the left side of the transmission cover and carrying at its end a foot pedal. This actuating member is moved by a cam action caused by forward movement of the pedal associated therewith. This pair of ears is slotted for the reception of a guide rod and is held apart by a spring. The bands on all the drums are identically the same and are interchangeable from one drum to another. It is Well known in the art that after an automobile has been used for a considerable length. of time, the asbestos linings of the bands become worn and have to be replaced.

Owing to the peculiar construction of the transmission and transmission cover of the Ford automobile, in order to replace any or all of the bands it is necessary to remove and replace the entire transmission cover an operation requiring several hours to perform.

The object of the present invention is to provide a transmission band for Fordautoband.

With this object in view, my invention consists in the novel construction and arrangement of parts to be hereinafter fully and specifically described andillustrated in the accompanying drawings, in which:

Figure 1 is a plan view of the transmis sion case of a Ford automobile showing the hand plate removed to expose the drums and their associated parts and showing the bands in place constructed in accordance with my invention, Fig. 2 is a cross sectional view on the line 22 of Fig. 1 illustrating my novel band as applied to the brake drum, Fig. 3 is a fragmentary side elevation showing the removable ear applied to a band, Fig. i

I is a fragmentary front elevation thereof,

and Fig. 5 isa fragmentary top plan View thereof.

Referring more particularly to the drawings, the numeral 1 designates the transmission ease of a Ford automobile which comprises the lower portion 2-and the re movable cover 3, the cover 3 being provided with the opening a closed by a hand .plate 5.

The numerals 6, 7, and 8 designate, respectively, the brake, reverse and low speed drums. Each of these drums is encircled by a band 9 having the usual asbestos lining 10 and provided with the ordinary stationary slotted ear 11 and a slotted removable ear 12 to be hereinafter described in detail.

The numerals 13 and 14 designate the foot pedals for contracting the bands 9 on the drums 6 and 7, respectively, by means of the cam members 15 and 16 and the rods 17 and 18 passing through the ears and having nuts '19 threaded upon their ends. Springs 20 are disposed between each pair of ears. The numeral 21 designates the foot pedal for operating the band 9 on the low speed drum S-by means of the cam actuated member 22 engaging the removable ear 12 slidable upon a guide rod 23. A spring 21 is disposed between this pair of ears.

The operation of the drums and their associated parts forms no portion of the present invention and will not be described, although the parts have been described somewhat in detail for the purpose of explaining the application and advantages of applicants invention.

In order that the ear 12 may be removable, I form one end of the band 9 with upwardly and inwardly extending longitudinal side flanges 25, and form the base of the ear with grooves 26 slidably receiving the flanges 25, forming a dovetail connection. The extreme rear portion of the base of the ear is provided with lateral extensions 27 engaging the rear edges of the flanges 25 for holding theear in place so that it can be moved in one direction only. The ear 12 is applied to the band 9 by catching the front portions of the grooves 26 under the flanges 25 and moving the ear longitudinally upon the band until the extensions 27 engage the flanges.

Assuming that the transmission of a Ford automobile is equipped with my bands having removable ears, when it is desired to remove a band it is necessary first to remove the hand plate 5 which will expose the interior mechanism to View. Assuming for explanation that it is the brake band which it is desired to remove, the operation is as follows: The nut 19 is then removed from the rod 17, whereupon the foot pedal 13 and the rod 17 may be withdrawn from the side of the'transmi-ssion cover 3. The ear l2,

. being the right hand one, is then slid downwardly to the right upon the band 9 to disengage it from the flanges 25 so that itmay be entirely removed. The operator then grasps the stationary ear 11 and pulls upwardly upon it, whereupon the, bandwill slide around the drum. The flexible nature of the band permits its ensuing partial straightening as it is pulled out of the transmission case as shown by the dotted lines in Fig. 2. The band is replaced by inserting its flanged end at the left of the drum and pressing it downwardly, whereupon its natural tendency to conform itself to the drum will cause it to encircle the drum. The band is pushed around in this manner until the ear 11 is in the proper place, after which the ear 12 is reengaged upon the flanges 25. The rod 17 is then reinserted and engaged within the notches in the ears and the nut 19 is again screwed in position.

of the bands Having thus described my invention what I claim is:

1. An automobile transmission band provided with a detachable ear, flanges on said band engaging said ear for holding it in position.

2. An automobile transmission band having a rigid ear on one end thereof and a detachable ear on the other end, said detachable ear being held in position by converging flanges formed on said band.

3. An automobile transmission band having a detachable ear on one end thereof, said ear being providedavith slots on its sides to engage flanges formed on said band.

4. An automobile transmission band comprising a curved strip of resilient material, an ear rigidly mounted on one end of said band, a second ear slidably eugageable upon and removable from the other end thereof, converging flanges on said band. and slots in the sides of said ear for engagement with said flanges.

5. An automobile transmission band comprising a strip of resilient material. an ear rigidly mounted on one end thereof. a seeond ear slidably engageable and removable from the other end thereof and means for limiting the removal of said second ear in but one direction.

6. An automobile transmission baud comprising a curved strip of resilient material, an ear rigidly secured on one end thereof,

and an ear slidably engageable upon and removable from the other end thereof.

7. An automobile transmission baud comprising a curved strip of resilient material, an ear rigidly secured on "oncend thereof, converging flanges on the sides of the other end thereof, an ear provided with grooves engageable with said flanges. and lateral extensions on said ear engaging the rear ends of said flanges, whereby said second named ear may be removed from said band by longitudinal movement in one direction.

This operation is of course the same for any nwepoo m 8. An automobile transmission band com- In testimony whereof I hereto affix my prising a strip of resilient material and an signature in the presence of two Witnesses. ear slidably engageable thereon. THOMAS LOCKE WHITE 9. An automoblle transmission band com- 5 prising a strip of resilient material, and an Witnesses:

ear slidably engageable upon and removable Mrs. T. L. WHITE, therefrom. NORMAN H. YoUNG. 

